Blocks

BLOCK TYPE
H22A = closed deck
H22A1 = closed deck
H22A4 = open deck
H23A = open deck
H23A1 = closed deck
F20A = open deck
F20B = open deck
F22A = open deck
F22B = open deck
F22B1 = open deck
F22B2 = open deck
F23A = open deck

DECK HEIGHT
H22A = 219.5mm/8.643
H22A1 = 219.5mm/8.643
H22A4 = 219.5mm/8.643
H23A = 219.5mm/8.643
H23A1 = 219.5mm/8.643
F20A = 219.5mm/8.643
F20B = 219.5mm/8.643
F22A = 219.5mm/8.643
F22B = 219.5mm/8.643
F22B1 = 219.5mm/8.643
F22B2 = 219.5mm/8.643
F23A = 219.5mm/8.643

BORE
H22A block = 87mm/3.425
H22A1 block = 87mm/3.425
H22A4 Block = 87mm/3.425
H23A block = 87mm/3.425
H23A1 block = 87mm/3.425
F20A block = 85mm/3.346
F20B block = 85mm/3.346
F22A block = 85mm/3.346
F22B block = 85mm/3.346
F22B1 block = 85mm/3.346
F22B2 block = 85mm/3.346
F23A block = 86mm/3.385

Rods

LENGTH
H22A = 143.0mm/5.633
H22A1 = 143.0mm/5.633
H22A4 = 143.0mm/5.633
H23A = 141.5mm/5.572
H23A1 = 141.5mm/5.572
F20A = 145.0mm/5.709
F20B = 145.0mm/5.709
F22A = 141.5mm/5.572
F22B = 141.5mm/5.572
F22B1 = 141.5mm/5.572
F22B2 = 141.5mm/5.572
F23A = 141.0mm/5.551

WIDTH
H22A = 23.75mm/.935
H22A1 = 23.75mm/.935
H22A4 = 23.75mm/.935
H23A = 23.75mm/.935
H23A1 = 23.75mm/.935
F20A = 23.75mm/.935
F20B = 23.75mm/.935
F22A = 23.75mm/.935
F22B = 23.75mm/.935
F22B1 = 23.75mm/.935
F22B2 = 23.75mm/.935
F23A = 19.81mm/.780

MAIN BORE
H22A = 51.00mm/2.008
H22A1 = 51.00mm/2.008
H22A4 = 51.00mm/2.008
H23A = 51.00mm/2.008
H23A1 = 51.00mm/2.008
F20A = ???
F20B = 48.00mm/1.890
F22A = 51.00mm/2.008
F22B = 51.00mm/2.008
F22B1 = 51.00mm/2.008
F22B2 = 51.00mm/2.008
F23A = 48.00mm/1.890

PIN BORE
H22A = 21.97-21.98mm/.8649-.8654
H22A1 = 21.97-21.98mm/.8649-.8654
H22A4 = 21.97-21.98mm/.8649-.8654
H23A = 21.97-21.98mm/.8649-.8654
H23A1 = 21.97-21.98mm/.8649-.8654
F20A = 21.97-21.98mm/.8649-.8654
F20B = 21.97-21.98mm/.8649-.8654
F22A = 21.97-21.98mm/.8649-.8654
F22B = 21.97-21.98mm/.8649-.8654
F22B1 = 21.97-21.98mm/.8649-.8654
F22B2 = 21.97-21.98mm/.8649-.8654
F23A = 21.97-21.98mm/.8649-.8654

Pistons

BORE
H22A = 87mm/3.425
H22A1 = 87mm/3.425
H22A4 = 87mm/3.425
H23A = 87mm/3.425
H23A1 = 87mm/3.425
F20A = 85mm/3.346
F20B = 85mm/3.346
F22A = 85mm/3.346
F22B = 85mm/3.346
F22B1 = 85mm/3.346
F22B2 = 85mm/3.346
F23A = 86mm/3.385

COMPRESSION HEIGHT
H22A = 31.0mm/1.221
H22A1 = 31.0mm/1.221
H22A4 = 31.0mm/1.221
H23A = 30.5mm/1.203
H23A1 = 30.5mm/1.203
F20A = ???
F20B = 31.0mm/1.221
F22A = 30.5mm/1.203
F22B = 30.5mm/1.203
F22B1 = 30.5mm/1.203
F22B2 = 30.5mm/1.203
F23A = 30.0mm/1.181

PISTON VOLUME
H22A = -1.9 cc
H22A Type S = +4.2 cc
H22A1 = -1.8 cc
H22A4 = -1.8 cc
H23A = +4.3 cc
H23A1 = -9.9 cc
F20A = -4.7 cc
F20B = +8.0 cc
F22A = -14.5 cc
F22B = -11.2 cc
F22B1 = -14.5 cc
F22B2 = -14.5 cc
F23A = -18.0 cc

WRIST PIN DIAMETER
H22A = 22.0mm/.866
H22A1 = 22.0mm/.866
H22A4 = 22.0mm/.866
H23A = 22.0mm/.866
H23A1 = 22.0mm/.866
F20A = 22.0mm/.866
F20B = 22.0mm/.866
F22A = 22.0mm/.866
F22B = 22.0mm/.866
F22B1 = 22.0mm/.866
F22B2 = 22.0mm/.866
F23A = 22.0mm/.866

Crankshafts

STROKE
H22A = 90.7mm/3.570
H22A1 = 90.7mm/3.570
H22A4 = 90.7mm/3.570
H23A = 95mm/3.740
H23A1 = 95mm/3.740
F20A = 88mm/3.464
F20B = 88mm/3.464
F22A = 95mm/3.740
F22B = 95mm/3.740
F22B1 = 95mm/3.740
F22B2 = 95mm/3.740
F23A = 97mm/3.818

MAIN JOURNAL DIAMETER
H22A = 50mm
H22A1 = 50mm
H22A4 = 55mm
H22A4 = 50mm (1997 Only)
H23A = 55mm
H23A1 = 50mm
F20A = 50mm
F20B = 55mm
F22A = 50mm
F22B = 50mm
F22B1 = 50mm
F22B2 = 50mm
F23A = 55mm

ROD JOURNAL DIAMETER
H22A = 47.95mm/1.888
H22A1 = 47.95mm/1.888
H22A4 = 47.95mm/1.888
H23A = 47.95mm/1.888
H23A1 = 47.95mm/1.888
F20A = 47.95mm/1.888
F20B = 44.98mm/1.771
F22A = 47.95mm/1.888
F22B = 47.95mm/1.888
F22B1 = 47.95mm/1.888
F22B2 = 47.95mm/1.888
F23A = 44.98mm/1.771

Cylinder Heads

HEAD VOLUME
H22A = 53.8cc
H22A1 = 53.8cc
H22A4 = 53.8cc
H23A = 53.8cc
H23A1 = 50.0cc
F20A = 50cc
F20B = ???
F22A = 50.5cc
F22B = 50.5
F22B1 = 50.6cc
F22B2 = 50.6cc
F23A = ???

INTAKE VALVE DIAMETER
H22A = 35mm/1.38
H22A1 = 35mm/1.38
H22A4 = 35mm/1.38
H23A = 35mm/1.38
H23A1 = 34mm/1.34
F20A = 34mm/1.34
F20B = 34mm/1.34
F22A = 34mm/1.34
F22B = 34mm/1.34
F22B1 = 34mm/1.34
F22B2 = 34mm/1.34
F23A = 34mm/1.34

EXHAUST VALVE DIAMETER
H22A = 30mm/1.18
H22A1 = 30mm/1.18
H22A4 = 30mm/1.18
H23A = 30mm/1.18
H23A1 = 29mm/1.14
F20A = 29mm/1.14
F20B = 29mm/1.14
F22A = 29mm/1.14
F22B = 29mm/1.14
F22B1 = 29mm/1.14
F22B2 = 29mm/1.14
F23A = 29mm/1.14

Head Gaskets

BORE
H22A = 88mm/3.46
H22A1 = 88mm/3.46
H22A4 = 88mm/3.46
H23A = 88mm/3.46
H23A1 = 88mm/3.46
F20A = 85.5mm/3.37
F20B = 85.5mm/3.37
F22A = 85.5mm/3.37
F22B = 85.5mm/3.37
F22B1 = 85.5mm/3.37
F22B2 = 85.5mm/3.37
F23A = 86.5mm/3.41

THICKNESS
H22A = 0.66mm/.026
H22A1 = 0.66mm/.026
H22A4 = 0.66mm/.026
H23A = 0.66mm/.026
H23A1 = 0.66mm/.026
F20A = 0.66mm/.026
F20B = 0.66mm/.026
F22A = 0.66mm/.026
F22B = 0.66mm/.026
F22B1 = 0.66mm/.026
F22B2 = 0.66mm/.026
F23A = 0.66mm/.026

Note:
Gasket thickness measured after crush

Bearings

MAIN BEARING THICKNESS
Blue: 2.013 - 2.010mm / 0.0793 - 0.0791
Black: 2.010 - 2.007mm / 0.0791 - 0.0790
Brown: 2.007 - 2.004mm / 0.0790 - 0.0789
Green: 2.004 - 2.001mm / 0.0789 - 0.0788
Yellow: 2.001 - 1.998mm / 0.0788 - 0.0787
Pink: 1.998 - 1.995mm / 0.0787 - 0.0785
Red: 1.995 - 1.992mm / 0.0785 - 0.0783

ROD BEARING THICKNESS
Blue: 1.510 - 1.507mm / 0.0594 - 0.0593
Black: 1.507 - 1.504mm / 0.0593 - 0.0592
Brown: 1.504 - 1.501mm / 0.0592 - 0.0591
Green: 1.501 - 1.498mm / 0.0591 - 0.0590
Yellow: 1.498 - 1.495mm / 0.0590 - 0.0589
Pink: 1.495 - 1.492mm / 0.0589 - 0.0587
Red: 1.492 - 1.489mm / 0.0587 - 0.0586

MAIN BEARING WIDTH
H22A = 19.9mm/.784
H22A1 = 19.9mm/.784
H22A4 = 19.9mm/.784
H23A = 19.9mm/.784
H23A1 = 19.9mm/.784
F20B = 19.9mm/.784
F22A = 19.9mm/.784
F22B = 19.9mm/.784
F22B1= 19.9mm/.784
F22B2= 19.9mm/.784
F23A = 19.9mm/.784

ROD BEARING WIDTH
H22A = 19.35mm/.762
H22A1 = 19.35mm/.762
H22A = 19.35mm/.762
H23A = 19.35mm/.762
H23A1 = 19.35mm/.762
F20A = 19.35mm/.762
F20B = 19.35mm/.762
F22A = 19.35mm/.762
F22B = 19.35mm/.762
F22B1 = 19.35mm/.762
F22B2 = 19.35mm/.762
F23A = 15.47mm/.609

** Full credit goes to Innovation, PirateMcFred, prelittledude, Jdogg, ZigenBallz and HondaFan81 for this information. **

 

Would make a nice sticky...

 

Okay this may be a dumb question but I need to kill any doubt for a friend.

Does an H22 head fit an F22 BLOCK.

I say no. She doesnt believe me. Help me fellas!

 

search. the short answer is yes it does, this has been covered a million times.

 

Damn so it does? I've never seen it done before. Is it a straight bolt up or what?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bluetintruben &raquo;</TD></TR><TR><TD CLASS="quote">Damn so it does? I've never seen it done before. Is it a straight bolt up or what?</TD></TR></TABLE>

like stated above, search. Or better yet, go into the FAQ and under the Swaps section you'll see some links to it. Lots of info on that swap out there.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyte-S &raquo;</TD></TR><TR><TD CLASS="quote">Would make a nice sticky...</TD></TR></TABLE>

not a sticky, too many as it is... but I will add this to the FAQ

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TouringAccord &raquo;</TD></TR><TR><TD CLASS="quote">

not a sticky, too many as it is... but I will add this to the FAQ </TD></TR></TABLE>

 

Bummp for some great info

 

I thought it would be good in the accord faq too, but George Knighton said to just post it up. so I guess I just did what I was told to do. and as far as the h/f swap as far as I've seen the h23 head is easier to swap on then the h22.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaccord &raquo;</TD></TR><TR><TD CLASS="quote">I thought it would be good in the accord faq too, but George Knighton said to just post it up.</TD></TR></TABLE>

right, we don't post the info straight into the FAQ. the user makes a thread for the info, then we link that thread into the FAQ

 

cool wasn't sure how that worked but good to know.

 

There is a mistake in that list.

The piston volume for the F23's are not all the same.

The F23A1/A4 are -13.6. The F23A5 has a piston volume of -18.

Just a heads up.

 

I wish i knew how to use all that info....

 

are any F-series motors FRM

 

just the f20c/f22c found in the s2k uses frm

 

see i thought that F22B's were cast iron sleeves factory

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BIG T &raquo;</TD></TR><TR><TD CLASS="quote">see i thought that F22B's were cast iron sleeves factory</TD></TR></TABLE>

not cast, but iron yes

 

Another heads-up, the f22b2 intake valve is actually 32mm.

Sources:
1) AEM Engine ID and Spec Chart
2) 94 Accord Coupe Shop Manual Section 6 pages 39-40

 

Hello,

i have a new used f20b dohc i need to overhaul the engine.
im a newbie not much knowing some parts of the engine..
planning to buy the overhauling kit and i head that h22a can be use
for f20b and how about the piston rings, crankshaft main bearing
and the connecting rod? i don't see many parts of f20b so i might thinking
that the h22a can be fit for f20b?

hope i can hear some good responds in the group.

THanks.